1. Department of Pharmacognosy, Pharmacy College, King Saud University, Riyadh 11451, Saudi Arabia
2. Department of Chemistry, College of Science, King Saud University, P.O. Box 22452, Riyadh 11495, Saudi Arabia
3. Deanship of Scientific Research, Umm Al-Qura University, Makkah, Saudi Arabia
4. Department of Pharmaceutics, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia